This is a unique situation. It would be good if you stop masturbation. However, if you need to do it, move your finger around your clitoris (do not rub or tourch clitoris) or try mild type of stimulation You may calm yourself by doing deep and slow abdominal breathing. By this method you can avoid masturbation..
If it continue to last go to the doctors
Many women including me wish to be like you so why you want to stop it. Being very orgasmic woman is a bless and keep orgasming. Most women envy you and most men love you that way.